OP, sorry to hear that. to be completely honest it sounds like you should have gotten sportline, or at the very least the adaptive suspension. How many miles are on your car? My dad had an X3 for a few days and returned it, it had 150 miles on the car. They might let you return it if your getting another BMW.

Like jon said, some coil overs will quickly change your tune about it feeling like a boat.

If your dealer lets you swap for a sportline, make sure it has the sport auto.

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F30 335 Estoril Blue Msport with performance exhasut and black grilles